AFRICOM: International Council of African Museums
http://www.africom.museum/

American Association of Museums (AAM)
http://www.aam-us.org
 
Archives & Museum Informatics
http://www.archimuse.com
 
Association of Moving Image Archivists (AMIA)
http://www.amianet.org/

Association of Science and Technology Centers (ASTC)
http://www.astc.org

Canadian Heritage Information Network (CHIN)
http://www.chin.gc.ca

Center for History and New Media
http://chnm.gmu.edu/index.php

Computers and the History of Art (CHArt)
http://www.chart.ac.uk/

DAM Symposium
http://www.damusers.com

Digital Library Federation
http://www.diglib.org

The International Committee for Documentation of the International Council of Museums (ICOM-CIDOC) Le Comité international pour la documentation du Conseil international des musées (ICOM-CIDOC)
http://www.willpowerinfo.myby.co.uk/cidoc/

Mountain-Plains Museums Association (MPMA)
http://www.mpma.net/

Museum Documentation Association (MDA)
http://www.mda.org.uk/

Museums and the Web
http://www.archimuse.com/conferences/mw.html

Museums Computer Group
http://www.museumscomputergroup.org.uk/

The National Initiative for a Networked Cultural Heritage (NINCH)
http://www.ninch.org

Northeast Documentation Conservation Center (NEDCC)
http://www.nedcc.org/

RLG
http://www.rlg.org/

Rights and Reproduction Information Network (RARIN)
http://www.rcaam.org/
Click on Reference and scroll down to RARIN: Rights and Reproduction Information Network

Visual Resources Association (VRA)
http://www.vraweb.org
Download: Core Competencies for Visual Resources Management, An IMLS Funded Research Project at the University at Albany, SUNY (PDF file)